view libuwrap/prelim_init.c @ 39:b9ecfa54fe2b

fc-duart28-conf: replace find and check-eeprom with single show command The original design with separate find and check-eeprom commands was driven by the assumption that we had to bump off the ftdi_sio driver in order to read the EEPROM, while a USB device tree check could be done non-invasively. However, now that we know that we can read the EEPROM non-invasively too, we can simplify the tool with a single show command.
author Mychaela Falconia <falcon@freecalypso.org>
date Sun, 10 Sep 2023 19:21:20 +0000
parents ab506f6aa57c
children
line wrap: on
line source

/*
 * libftdi-0.20 performs these preliminary steps just before it goes
 * looking for the device of interest via usb_get_busses() followed
 * by traversal of the returned tree - hence we do likewise.
 */

#include <stdio.h>
#include <stdlib.h>
#include <usb.h>
#include "prelim_init.h"

void libusb_prelim_init(void)
{
	usb_init();
	if (usb_find_busses() < 0) {
		fprintf(stderr, "error: usb_find_busses() failed\n");
		exit(1);
	}
	if (usb_find_devices() < 0) {
		fprintf(stderr, "error: usb_find_devices() failed\n");
		exit(1);
	}
}